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Gross Anatomy > Ear > Flashcards

Ear Flashcards

1
Q

Auricle

A

skin and elastic cartilage

collect sound waves

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2
Q

Inn for mm of auricle

A

Facial N

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3
Q

Sensory Inn to External Auditory Meatus

A

Auriculotemporal N and Auricular Branch of Vagus N

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4
Q

External Auditory Meatus

A

tube leading to tympanic membrane

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5
Q

Lymph Drainage of External Ear

A

Superficial Parotid, Mastoid, Superficial Cervical Lymph Nodes

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6
Q

Appearance of Tympanic Membrane

A

Pearly gray and concave

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7
Q

Umbo

A

depression in center of tympanic membrane

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8
Q

Location of Middle Ear

A

Petrous part of temporal bone

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9
Q

Auditory Tube

Eustachian Tube

A

connects middle ear to nasopharynx

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10
Q

What does the back of the Middle Ear connect to?

A

Middle Antrum

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11
Q

Roof of Tympanic Cavity

A 
Tegman Tympani (part of temporal bone)
separates tympanic cavity from temporal lobe
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12
Q

Floor of Tympanic Cavity

A

Bone separating cavity from internal jugular vein

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13
Q

Opening on Anterior Wall of Tympanic Cavity

A

Auditory Tube

Tensor Tympani

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14
Q

Posterior Wall of Tympanic Cavity

A

opening to mastoid antrum

pyramid

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15
Q

Medial Wall of Tympanic Cavity

A 
Promontory
Fenestra Vestibuli (oval window)
Fenestra Cochlea (round window)
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16
Q

Lateral Wall

A

Tympanic Membrane

17
Q

Auditory Ossicles

A

Malleus, Incus, Stapes

18
Q

Tensor Tympani

A

from auditory wall to handle of malleus

dampens vibrations of tympanic membrane

19
Q

Inn of Tensor Tympani

A

V3

20
Q

Stapedius

A

from pyramid to neck of stapes

dampens vibrations of stapes

21
Q

Inn of Stapedius

A

Facial N

22
Q

Auditory Tube Function

A

equalize pressure of middle ear w/ atmospheric pressure

23
Q

Aditus

A

connectus Middle Ear to Mastoid Antrum

24
Q

Tympanic Nerve

A

from CN 9
inn mucosa of middle ear
branches into lesser petrosal n

25
Q

Lesser Petrosal N

A

from tympanic n

pre para to otic ganglion via foramen ovale

Gross Anatomy (30 decks)

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